How much onion is toxic to dogs

As a concerned pet owner, you might find yourself puzzled after discovering that certain foods we enjoy can be harmful to our furry friends. Perhaps you were preparing a delicious onion-laden dish and suddenly recalled hearing that onions can pose a threat to dogs. Now, you’re left wondering how cautious you should be. Understanding the toxicity levels of onion for dogs is crucial, especially to ensure the safety and well-being of your beloved companion.

Even small amounts of onion can be toxic to dogs, with 0.5% of their body weight being harmful.

Onions contain compounds called thiosulfates, which are toxic to dogs and can lead to oxidative damage to their red blood cells. Even a small amount can cause gastrointestinal upset, and larger quantities can result in serious conditions like hemolytic anemia, where the dog’s immune system starts destroying its own red blood cells. For most dogs, the hazardous threshold is approximately 0.5% of their body weight in onion, whether raw, cooked, or dehydrated. It’s essential to keep onions out of their reach, as the effects may not be immediately apparent, often taking a few days to manifest. If you suspect your dog has consumed onions, it’s advisable to consult a veterinarian promptly for a thorough assessment and potential treatment.